Lyric discussion by marjolein 

Don't mess with my heart, don't mess with my mind Won't let you get us down this time.

Though I think this part is about a relationship or somethin', or at least saying you don't wanna be messed with. As in: don't hurt me again, cuz you've hurt me before. But overall, I think it's about living your life, making the most of it and just to have fun and all. Like popbaby1 said (:

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